46 C.F.R. § 28.250 High water alarms.
Title 46 - Shipping
On a vessel 36 feet (11.8 meters) or more in length, a visual and audible alarm must be provided at the operating station to indicate high water level in each of the following normally unmanned spaces: (a) A space with a through-hull fitting below the deepest load waterline, such as the lazarette; (b) A machinery space bilge, bilge well, shaft alley bilge, or other space subject to flooding from sea water piping within the space; and (c) A space with a non-watertight closure, such as a space with a non-watertight hatch on the main deck.
Title 46: Shipping
PART 28—REQUIREMENTS FOR COMMERCIAL FISHING INDUSTRY VESSELS
Subpart C—Requirements for Documented Vessels That Operate Beyond the Boundary Lines or With More Than 16 Individuals On Board, or for Fish Tender Vessels Engaged in the Aleutian Trade
§ 28.250 High water alarms.
